Stop-motion for knitting-machines



G. W. RUTH.

STOP MOTION FOR KNITTING MAGI'IINES.

APPLICATION FILED m. 19, 1903.

PATENTED .JAN. 19, 1904.

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G. W. RUTH.

STOP MOTION FOR KNITTING MACHINES.

. APPLIOATION FILED FEB. 19, 1903.

NO MODEL. v

3 SHEETS-SHEET 2.

No. 750,225. PATBNTED JAN. 19, 1904.

' G. W. RUTH.

STOP MOTION FOR KNITTING MACHINES.-

APPLICATION FILED FEB. 19, 1903.

N0 MODEL 3 SHEETB-SKBET 3.

( flzafl w 97 m w 1 /0 gw a I y I uhniimm L 1 mun-i \JZ/t J7 5 J65Patented January 19, 1904. 3

UNITED, STATES PATENT OFFICE.

GEORGE W. RUTH, OF NORRISTOWN, PENNSYLVANIA, ASSIGNOR TO RUTH AUTOMATICKNITTING MACHINE COMPANY, A CORPORATION OF DELAWARE.

STOP-MOTION FQR'KNITTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 750,225, dated January19, 1904.

A li ati n filed February 19, 1903. Serial No. 144,075. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE W. RUTH, a citiing-belt from the fixed to theloose pulley, so

that the momentum, which would otherwise cause certain of the parts ofthe machine to continue in motion for awhile after the belt is shifted,is checked instantly.

Figure 1 represents a side elevation of a stop-motion forknitting-machines embodying my invention. Fig. 2 represents a plan viewof certain of the parts seen in Fig. 1. Fig. 3 represents a perspectiveview of certain detached portions of the device on an enlarged scale.Fig. 4 represents a perspective view of certain of the parts seen inFig. 3, but in different positions from those seen in'said Fig. 3. Fig.5 representsa side elevation of certain detached. portions of thedevice. Fig.

.6 represents a side elevation of certain of the parts seen in Fig. 1,but in different positions from those seen in said Fig. 1. Fig. 7represents a perspective view of certain detached portions of thedevice. Fig. 8 represents a partial side elevation and'partial verticalsection of certain detached portions of the device.

.Fig. 9 represents a partial side elevation and partial vertical sectionof the parts seen in Fig. 8 in difl erent positionsfrom those seen insaid Fig. 8. I Fig. 10 represents a partial side elevation andpa'rtialvertical section of certain detached portions of the device.

Similar numerals of reference indicate corresponding parts in thefigures.

Referring to the drawings, 1 designates a portion of the frame of aknitting-machine in which is journaled the driving-shaft 2, which isprovided with the fixed and loose pulleys 3 and 4, respectively, itbeing noted that a belt 5 is employed to drive the pulley 3, andconsequently the shaft 2.

Fitted in the frame 1 of the machine is a needle-cylinder 6 and acam-cylinder 7 it being noted that the flange 8 of the cylinder 7projects above the portion 9 of the frame 1 of the machine, as best seenin Figs. 1 and 6.

In the present instance a bracket or hanger 10 is secured to the frame 1and has fulcrumed therein, as at 11, a brake-lever 12, whose innor endis provided with a brake-shoe 13, which is adapted to be brought incontact with the flange 8 when one or more yarns 14 break, ashereinafter described. The outer extremity of the lever 12 rests upon aspring 15, which is placed within a pocket 16, as best seen'in Figs. 1,3, and 6, it being noted that the pressure of said spring 15 against thelever 12may be adjusted, by means of the screw 17, so as to increase ordiminish the pressure of the shoe 13 against the flange 8 of thecamcylinder 7 when said shoe is brought in contact with said flange.

Pivoted in the bracket 10, as at 18, is a latch 19, provided with atooth 20, adapted to engage with thelever 12, as best seen in Figs.

1, 2, and 3, it being noted that said latch 19 is provided with aprojecting member 21, formed with an inclined face 22 for a purposehereinafter described. The latch 19 has secured thereto one end of aspring 23, whose opposite end is secured to some fixed point, as at 24.(See more particularly Fig. 6.) The object of the spring 23 is tonormally retain the tooth 20 in engagement with the lever12,

asbest seen in Fig. 1. I

Fulcrumed, as at 25, in the frame 1 is a lever 26, which has pivotedthereto one end of a rod or link 27, whose opposite end is fitted inablock 28 and is provided with a nut 29, as best seen in Figs. 1, 2, and6, it being noted that a spring 30 encircles a portion of the rod 27 andis placed between the block 28 and a shoulder 31 on the rod 27 for apurpose hereinafter described. 7 j

The block 28 is pivoted, as at 32, to the lever 33, which is fulcrumedat 34 in the frame of the machine and as best seen in Figs. 1, 2, and 6,it being noted that the lever 33 is provided with a recessed portion 35,with which the trigger 36 is adapted to engage, as seen in Figs. 1 and 2and for a purpose hereinafter described. The lever 33 has securedthereto one end of a-spring 37, whose opposite end is secured to somefixed point, as at 38. it being noted that the trigger 36 has a portionthereof resting upon a spring 39 for a purpose hereinafter described.

Resting upon the outer end of the lever 33 is a stud 40, which projectsfrom the lever 41, as best seen in Figs. 1 and 2, it being noted thatthe lever 41 is fulcrumed at 42 in the frame of the machine and isprovided with a screw 43, which abuts against the brake-lever 12, so asto retain the brake-shoe 13 out of contact with the flange 8 when theseveral parts are in the position seen in Fig. 1.

The under side of the lever 26 is provided with a recessed portion 44,formed with an inclinced surface 45, (see Figs. 2, 8, and 9,) and theobject of which is to depress the rod 46 for a purpose hereinafterdescribed.

The rod 46 rests upon the outer end of a lever 47, fulcrumed at 48 inthe frame 1, it being noted that one end of a spring 49 bears againstthe under side of said lever 47 and retains the latter normally in thepositions seen in Figs. 1 and 9, it being further noted that the lever47 has in the present instance a projecting member 50, which enters arecess 51 in the rod 52, to which the shipping lever or arm 53 issecured, as best seen in Figs. 1 and 2. It will be noted on referring toFigs. 1 and 2 that a spring 54 encircles the rod 52 and that one end ofsaid spring 54 bears against the frame 1 and its opposite end bearsagainst the shipping lever or arm 53 for a purpose hereinafterdescribed.

Mounted in the frame 1 is a rod 55, provided with a handle 56 foroperating said rod 55 in order to shift the shipping lever or arm 53, soas to cause the belt 5 to move from the loose pulley 4 to the fixedpulley 3, so as to put the machine in operation. I Rising from the frame1 is a rod 57, rigidly secured thereto and provided with guides 58 and59, in which is loosely fitted a'rod 60, which is provided with arecessed portion 61, in which enters a tooth 62, which projects from alatch 63, (see Figs. 1 and 5,) fulcrumed at 64 in the guide 59 andretained normally in the position seen in Fig. 1 by a spring 65, theforce of which can be adjusted by the screw 66, and the object of all ofwhich is hereinafter described.

Projecting from the guide 59 are brackets or supports 67, in which isjournaled, as at 68 in Fig. 7 ,a finger 69, it being understood thatthere are as many finger-s69 as there are cops or bobbins 7O employedand that only one finger 69 and one bobbin 70 are illustrated in theaccompanying drawings. The finger 69 is formed with a bent portion 71and a projecting portion 72, it being noted that the portion 71 isadapted to be brought in contact with the lever 63 and that the bentportion 71 is adjacent to the yarn-guides 78, and the object of all ofwhich is hereinafter described.

The operation is as follows: Assuming the several parts to be in thepositions seen in Fig. 1, the yarn 14 is drawn from the bobbin 7 O andis passed through a yarn-guide 73 and from the latter to the yarn-guides7 2, the finger 69 occupying the position seen in Fig. 7, after whichthe yarn 14 is passed through the guides 74, 75, and 76 and then to theneedles 77 in the cylinder 6. The belt 5 is then shifted from the loosepulley 4 to the fixed pulley 3 by means of the shipping-lever 53, therod 55, and the handle 56, whereupon the recess 51 in the rod 52 isbrought in alinement with the projection 50 on the lever 47, and saidprojection 50 is caused to enter the recess 51 by reason of theexpansion of the spring 49, as seen in Figs. 1, 9, and 10, it beingunderstood that the interlocking of the projection 50 and recess 51prevents the shipping-lever 53 from moving, and consequently retains thebelt 5 upon the fixed pulley 3, and motion is imparted to the machine.When one or more yarns 14 break during the process of knitting, thefinger 69 is no longer supported by the broken yarn, and being normallyinclined, as seen in Fig. 7, said finger will turn in the directionindicated by the arrow (1 in said Fig. 7 and drop into the position seenin dotted lines, and thereby cause the bent portion 7 2 to turn in thedirection indicated by the arrow 5 in Fig. 7 and occupy the positionsseen in dotted lines in said Fig. 7 and in full lines in Fig. 5,whereupon the latch 63 is turned upon its fulcrum 64 and is brought intothe position seen in Fig. 5, thereby causing the tooth 62 to bewithdrawn from the recess 61, whereupon the rod is no longer supportedin its elevated position and drops by gravity from the position seen inFig. 1 to that seen in Fig. 6, it being noted that the weight of thefalling rod 60 is applied to the trigger 36 and causes the latter tomove from the position seen in Fig. 1 to that seen in Fig. 6, it beingapparent that the force of the blow of the rod 60 causes the trigger 36to become disengaged from the lever 33, and the latter being now free toturn upon its fulcrum 34 is moved from the position seen in Fig. 1 tothat seen in Fig. 6 by the contraction of the spring 37. The lever 33 inmoving from the position seen in Fig. 1 to that seen in Fig. 6 exerts apull upon the rod 27 and causes the latter to move in the directionindicated by the arrow 0 in Figs. 2 and 3, whereupon the lever 26 isturned on its fulcrum 25, causing said lever 26 to move from thepositions seen in Figs. 1 and 3 to those seen in Figs. 4 and 6, it beingnoted that the IIO under side of the lever 27 is bi ought in contactwith the inclined face 22 of the latch 19 and causes the latter to turnon its fulcrum 18 and move from the positions seen in Figs. 1 and 3 tothose seen in Figs. 1 and 6, whereupon the tooth 20 is withdrawn fromthe brake-lever 12, and thereby permits the spring 15 to expand andraise the outer end of the lever 12, so as to cause the brake-shoe 13 tobear against the flange 8 of the cam-cylinder 7 and immediately stop therotation of the latter, it being understood that when the lever 26 isbrought into the position seen in Fig. 4 and which corresponds with thatseen in Fig. 8 said lever 26 depresses the rod 16, which in turn removesthe projection 50 from the recess 51, as seen in Fig. 8, and the rod 52being no longer held against the compressed spring 54 is movedoutwardly, and with it the shipping-lever 53, which then shifts the belt5 from the fixed pulley 3 to the loose one 4, and thus stops themachine, it being understood that the shifting of the belt from thefixed to the loose pulley is accomplished simultaneously with theapplication of the brakeshoe, thereby checking the momentum which wouldotherwise exist. When the broken yarn is repaired, the several parts arereturned to the positions seen in Figs. 1, 2, 3, 7, and 9, after whichthe beltis again shifted from the loose to the fixed pulley. When thelever 33 is moved from the position seen in Fig. 6 to that seen in Figs.1 and 2, it is apparent that the lever 41 is turned upon its fulcrum 4-2by reason of the contact between the lever 33 and the stud 10, whichprojects from the lever 41 and rests upon the lever 33 and operates thebrake-lever 12 so as to remove the shoe 13 from contact with the flange8 and when brought into the position seen in Fig. 1 permits the spring23 tov contract and bring the tooth 20 in engagement with the lever 12,so as to retain the latter in the position seen in said Fig. 1.

Having thus described my invention, what I claim as new, and desire tosecure by Letter Patent, is

1. In a stop-motion for knitting-machines, a rotatable cylinder having aflange, a droprod supported in inoperative position during v the normalworking condition'of the yarn and adapted to be released under abnormalcondition of the yarn, a brake disposed adjacent the rotatable cylinderand adapted to contact with the flange thereof, means for applying thebrake, devices operative by the dropping of the drop-rod to release thebrake to the action of its operating means, a belt-shipper, means formoving the same to ship the belt and devices actuated by movement of thebrake-releasing devices to release the beltshipper to the action of itsoperating means.

2. In a stop-motion for knitting-machines, a rotatable cylinder, adrop-rod supported in inoperative position during normal workingcondition of the yarn and adapted to be re leased upon the breaking of ayarn, a'brake disposed adjacent the cylinder to contact with a partthereof, means for applying the brake, brake-releasing device forreleasing the brake to the action of its actuating means upon thedropping of the drop-rod, a beltshipper,means for moving the same, toship the belt, mechanism actuated by movement of the brake-releasingdevices to release the belt-shipper to the action of its operating meansand a lever under control of the said releasing devices to move thebrake into inoperative position when said releasing devices are reset.

3. In a stop-motion for knitting-machines, a rotatable cylinder, a brakedisposed adjacent said cylinder to contact therewith, means foroperating said brake, a latch for normally maintaining the brake ininoperative position, devices for tripping said latch upon the breakingof a yarn to free the brake in the action of its operating means, alever under the con:

trol of said devices for releasing the brake from contact with thecylinder and to enable the brake to be caught and held by said catchwhen the said tripping devices are reset.

1. In a stop-motion for knitting-machines,

a rotatable cylinder, a brake disposed adjacent said cylinder andadapted to contact with a part thereof, means for operating said brake,

a latch for normallymaintaining the brake in inoperative position,devices for tripping said latch upon the breaking of a yarn to free thebrake to the action of its operating means, a cam movable by saidtripping devices, a beltshipper, means to actuate it, mechanism disposedbetween the said cam and belt-shipper and operable by said cam torelease the beltshipper'to the operation of its actuating means, andmeans operable on the resetting of the tripping devices to release thebrake from the cylinder and to enable the latch to engage and hold thebrake in its inoperative position.

5. In a stop-motion for knitting-machines,

the combination of a rotatable cylinder, a brake disposed adjacentthereto and adapted to contact with a part thereof, means for operatingsaid brake, a latch having an inclined face and adapted to engage thebrake and maintain it in inoperative position, a pivoted lever having aportion to engage said inclined face of the latch and trip it from itsengagement with the brake, devices operable upon the breaking of a yarnfor actuating said pivoted lever, and means under control of saiddevices for disengaging the brake from the cylinder after the same hasacted, and when the said devices are reset.

6. In a stop-motion for knitting-machines, the combination of arotatable cylinder, a brake disposed adjacent thereto and adapted tocontact with a part thereof, means for operating said brake, a latchhaving an inclined face and adapted to engage the brake and maintain itin inoperative position, a pivoted lever having a portion to engage saidinclined face of the latch and trip it from its engagement with thebrake, said lever having a camsurface, a belt-shipper, and connectionsbetween the belt-shipper and said cam-surface for actuating thebelt-shipper upon movement of the pivoted lever, devices operable uponthe breaking of a yarn for actuating said pivoted lever, and means undercontrol of said devices for disengaging the brake from the cylinderafter the same has acted, and when the said devices are reset.

7. In a stop-motion for knitting-machines, the combination of arotatable cylinder having a flange, a brake disposed adjacent saidcylinder and adapted to act upon said flange, a spring normally tendingto apply the brake, a latch for maintaining the brake from actionagainst said spring, said latch having an inclined face, a pivoted leverfor acting upon said inclined face to trip the latch, means foractuating said lever upon the breaking of a yarn, and a lever engagingthe free end of the brake and operable to release the same from thecylinder and depress the free end that it may be engaged by the latchwhen the actuating means are reset.

8. In a stop-motion for knitting-machines, the combination of arotatable cylinder having a flange, a brake disposed adjacent saidcylinder and adapted to act upon said flange, a spring normally tendingto apply the brake, a latch for maintaining the brake from actionagainst said spring, said latch having an inclined face, a pivoted leverfor acting upon said inclined face to trip the latch, said pivoted leverhaving a cam on its under surface, a spring-acting belt-shipper,tripping devices for the belt-shipper under control of said cam forreleasing the belt-shipper to the action of its spring, means foractuating said lever upon the breaking of a yarn, and a lever engagingthe free end of the brake and operable to release the same from thecylinder and depress the free end that it may be engaged by the latchwhen the actuating means are reset.

9. In a stop-motion for knitting-machines, a drop-rod normally held inelevated position during proper Working condition of the yarn andadapted to be released upon the breaking of a yarn, a trigger adapted tobe operated by the dropping of the drop-rod, a rotatable cylinder, abrake adapted to act upon a portion thereof, a spring-latch for holdingthe brake out of action, a pivoted lever for tripping said latch,devices disposed between the trigger and pivoted lever to operate thelatter when the trigger is tripped, means operable by resetting of saiddevices for releasing the brake and moving it in position to be engagedby the latch, the devices between the trigger and pivoted lever beingyielding in one direction to permit resetting of said devices while thelatch is disengaged from the brake.

10. In a stop-motion for knitting-machines, the combination of arotatable cylinder having a flange, a pivoted brake, adapted to engagewith said flange, a latch for holding the brake out of action, saidlatch having an inclined face, a pivoted lever for tripping said latch,said lever having a cam, a belt-shipper, means for operating it, devicesoperable by the said cam for releasing the belt-shipper to the action ofits actuating means, a trigger, a drop-rod, devices disposed between thetrigger and pivoted lever for operating the latter on the dropping ofthe drop-rod, a lever having one end disposed adjacent one end of thepivoted brake and its opposite end under control of said devices,whereby upon resetting of said devices the brake is brought intoposition to be engaged by the latch.

GEORGE W. RUTH. Witnesses:

JonN A. VVIEDERS'IIEIM, C. l). MOVAY.

